I’m having a bit of issue to display my own app icon. Right now I’m trying the following

Icon(ImageBitmap.imageResource(R.mipmap.ic_launcher), contentDescription = null)

And I’m receiving:

java.lang.ClassCastException: class android.graphics.drawable.AdaptiveIconDrawable cannot be cast to class android.graphics.drawable.BitmapDrawable

This message was deleted.

Is the Type still consider Immutable/Stable for Compose? if the class is something like this 🧵

Where in the build.gradle file should I add compiler options "-Xopt-in=kotlin.RequiresOptIn"?

Question for those who are using LazyColumn (version 1.0.0-rc02). Do you feel that LazyColumn (with pager) feels a bit laggy? On older device feeling that it’s skipping frames 🤔

Is it possible to load network images in the compose preview?

Is there some kind of debug functionality for recomposition? I'd like to have a mode where a section of the screen flashes when it get's recomposed.

A colleague of mine tested one of my compose apps on a “Moto Z2 Play” running Android 9.0 and it turned out all composables render always in dark mode. Android 9 didn’t have dark mode yet but it had a “device theme” setting under “settings -> display -> advanced”. It seems changing that has no effect whatsoever. Every composable in the app is always displayed as if

isSystemInDarkTheme()

always returned

true

. I have tested on an API28 emulator and can’t reproduce: the composables are always rendered in light mode (as they are supposed to). Has anyone encountered a similar situation?

Hello! What is your attitude to compose functions, wrapped into class/object? The reason behind this question states like this - “when you start typing name of some object, first things AS proposes you is compose functions even in scopes related to domain/data layers”.

Hey everyone, I have a list of images that I’m saving locally, when entering the screen. I want to show them all at the same time when they are ready, in a LazyRow. To do this, I’m using produceState, to try to download the images, and return the Files of those downloaded successfully:

val imageFiles = produceState(initialValue = emptyList<File>(), imageRefs) {
  imageRefs.map { imageRef ->
    async {
      downloadItemImage(imageRef, file)
    }
  }.awaitAll().filterNotNull()
}

Then, I’d like to map this List<File> to a List<Painter>, and send it to my ImagesRow composable, like this:

val painters = imageFiles.value.map { file ->
  rememberImagePainter(file)
}
ImagesRow(painters = painters)

Problem is: The painters aren’t being updated when imageFiles is updated. Any ideas?

I'm building an app for a kiosk. Full compose. I'm trying to add a "debug" dialog that pops up if you click the same "empty" spot on the screen 10 times in 5 seconds. I initially added this on the activity level by overriding my activities

dispatchTouchEvent

method, but now I'm thinking if it'd be possible to have another wrapper composable just inside my Theme declaration that would be able to do the same thing. i.e. Change this

MyAppTheme {
 Scaffold { .. }
}

to this

MyAppTheme {
 DebugDialogTouchInterceptor {
  Scaffold { .. }
 }
}

Does anyone know if it'd be possible to write something like that in compose?

Is there an inverse

lerp

in Compose? Like when I have

start=10.dp

,

end=20.dp

,

current=15.dp

and want to feed this to that function and receive

fraction=0.5

back.

Hey! I'm trying to send some events from any object (ViewModel, for example) to a Composable function. To do this I've though about using

SharedFlow

instead of

StateFlow

because this should be a hot observable. I'm trying to collect the Flow in the Composable with

val state = flow.collectAsState(defaultValue)

even if this feels weird because it's not a state. • The Composable is not being recomposed when a new event is send, how's that achieved? • Is there any better way to consume/collect/observe a SharedFlow in a Composable function?

regarding indications: Since last I looked at this the logic has been changed. Is there a way to change the indication of a material compose components? Button doesn’t expose and previously I could set my own provider. On that same subject how do I change the rippleTheme?

Has there been any progress on any community efforts to port Compose to K/N? I remember seeing that the Jetpack team won't necessarily make the port, so it would have to be a community effort. Some of the projects that I've seen seem promising, but stopped at some point.

It seems to me that Coroutine Context and Compose Local are just dynamically scoped variables. Is there any possibility that Jetbrains will implement dynamically scoped variables to unify these bespoke implementations?

More out of curiosity than anything else, but does anyone know how to read this gerrit CL for when this update was merged? https://android-review.googlesource.com/c/platform/frameworks/support/+/1769505 I was attending an android conf today and someone mentioned they merged the version update today, but from what it looks like... this was actually merged on the 16th? Unless I'm reading gerrit incorrectly

I’m still having the issue where the app is impossible to build in the new canary 5. Does it happens to someone else? I thought such critical issue would be fixed in the new version 😕

java.lang.AbstractMethodError: abstract method "void androidx.lifecycle.DefaultLifecycleObserver.onCreate(androidx.lifecycle.LifecycleOwner)"

val navigateToRegOne: () -> Unit = {
    navController.navigate(GuestNavScreen.RegOne.route) {
        anim {
            enter = R.anim.slide_in
            exit = R.anim.fade_out
            popEnter = R.anim.fade_in
            popExit = R.anim.slide_out
        }
    }
}

Why the animation might not work? The page is displayed instantly.

I’m wondering if the Jetpack Compose release will include a new version of Android Studio as well

Is the onClick removed in Surface in 1.0.0-rc02? I see that my application is not responding to clicks anymore. It was experimental, is that why it fails?

I have a question about navigation cases. Imagine we have Scaffold with BottomNav BottomNav has 3 items - HomeScreen, SettingsScreen, CreateOrderScreen When you click on Home or Settings NavHost just changes screens in Scaffold But when you click CreateOrder user should be navigated to completely standalone screen (like different feature) CreateOrder screen doesn’t have bottom navigation and can be written without Scaffold, but since NavHost is located inside Scaffold composable we need no configure BottomNav to be hidden. But when application is getting bigger this logic might grow. Is there a good example how to share NavHost outside of Scaffold and BottomNav and still use it as root Composable or how this case should be done in Compose? @Ian Lake

What’s the best practice to manage state in JetPack Compose? See thread。

I want to know if the navigation transition has been available (including SharedElements). I am a bit curious, how to design to interact between widgets in the case of ComposeNode-APIs is not open

C'mon google! Push the deploy button!

Noticed that Accompanist-Glide library is now deprecated (as of v0.14), had some questions around this: • Why was this done? Is Coil the recommended official solution? • For existing Android Views that use Glide, is Glide -> Coil migration now a pre-requisite of Android View -> Compose migration?

I am currently trying to integrate compose in my existing app… nearly all screens are build with a recyclerview and round about 200 different viewholder types…. every screen can display all of this viewholder types. so my problem is that i can´t migrate all types at once and i created a viewholder with a composeview where i can call the migrated stuff

fun bindView(item) {
  composeContainer.setContent {
    MyCustomTheme {
      item.Content()
    }
  }
}

1. Is it a good practice to do migration like this. i noticed that every call to MyCustomTheme creates new CompositionLocals that i create in it 2. will the view be recomposed every time the bind method is called?

I just updated Android Studio and build.gradle to use compose 1.0.0-rc02 but since then some of my files wont work. I already invalidated cache and restarted AS and PC.